Appliance knob



FIG. 1 is a front perspective view of an appliance knob showing my new design;

FIG. 2 is a front elevational view of the appliance knob of FIG. 1;

FIG. 3 is a first side elevational view of the appliance knob of FIG. 1, with the second side elevational view being a minor image of FIG. 3;

FIG. 4 is a bottom plan view of the appliance knob of FIG. 1; and,

FIG. 5 is a top plan view of the appliance knob of FIG. 1.

The rear elevational view is not shown and forms no part of the claimed design. The portion shown in broken lines is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an appliance knob, as shown and described. 